NAPTR Catch-all

[Doug]

Hi Everyone.

I've been trying to get a solution working where by I need to supply a
response based on a NAPTR query. The problem is, the domain section of
the NAPTR needs to be "dynamic", as this could be different per query. I
based my config on the following url, and all works well for A record
lookups, however NAPTR lookups fail:

http://doc.pfsense.org/index.php/Creating_a_DNS_Black_Hole_for_Captive_Portal_Clients

Below is my config:

;
; BIND reverse data file for local loopback interface
;
$TTL    604800
@    IN    SOA    . root.localhost. (
                   201201051527     ; Serial
             604800        ; Refresh
              86400        ; Retry
            2419200        ; Expire
             604800 )    ; Negative Cache TTL
;
@    IN    NS    .
.    IN    A    99.99.99.5
*.    IN    A    99.99.99.5


7.7.7.5.2.1.4.4.9.9.8.1.2.    IN    NAPTR    100    10    "u"   
"E2U+sip"    "!(^.*$)!sip:2799820784000132" .    ; Testing


If i do the query for 7.7.7.5.2.1.4.4.9.9.8.1.2. - I get the correct
response, however, if I add onto the query as such:

7.7.7.5.2.1.4.4.9.9.8.1.2.microsoft.com

I get the following response:

; <<>> DiG 9.7.0-P1 <<>> 7.7.7.5.2.1.4.4.9.9.8.1.2.microsoft.com
@127.0.0.1 -t NAPTR
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21413
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;7.7.7.5.2.1.4.4.9.9.8.1.2.microsoft.com. IN NAPTR

;; AUTHORITY SECTION:
.            604800    IN    SOA    . root.localhost. 3632555911 604800
86400 2419200 604800

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Jan  9 14:36:50 2012
;; MSG SIZE  rcvd: 105


I checked a few items on the web, but could not find out if what I'm
doing was impossible.

Your valued input would be greatly appreciated.

Many thanks
Doug